1 /* $OpenBSD: pfctl_parser.c,v 1.240 2008/06/10 20:55:02 mcbride Exp $ */ 2 3 /*- 4 * SPDX-License-Identifier: BSD-2-Clause 5 * 6 * Copyright (c) 2001 Daniel Hartmeier 7 * Copyright (c) 2002,2003 Henning Brauer 8 * All rights reserved. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 14 * - Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * - Redistributions in binary form must reproduce the above 17 * copyright notice, this list of conditions and the following 18 * disclaimer in the documentation and/or other materials provided 19 * with the distribution. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 22 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 24 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 25 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 27 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 28 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 29 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 31 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 32 * POSSIBILITY OF SUCH DAMAGE. 33 * 34 */ 35 36 #include <sys/types.h> 37 #include <sys/ioctl.h> 38 #include <sys/socket.h> 39 #include <sys/param.h> 40 #include <sys/proc.h> 41 #include <net/if.h> 42 #include <netinet/in.h> 43 #include <netinet/in_systm.h> 44 #include <netinet/ip.h> 45 #include <netinet/ip_icmp.h> 46 #include <netinet/icmp6.h> 47 #include <net/pfvar.h> 48 #include <arpa/inet.h> 49 50 #include <assert.h> 51 #include <search.h> 52 #include <stdio.h> 53 #include <stdlib.h> 54 #include <string.h> 55 #include <ctype.h> 56 #include <netdb.h> 57 #include <stdarg.h> 58 #include <errno.h> 59 #include <err.h> 60 #include <ifaddrs.h> 61 #include <inttypes.h> 62 #include <unistd.h> 63 64 #include "pfctl_parser.h" 65 #include "pfctl.h" 66 67 void print_op (u_int8_t, const char *, const char *); 68 void print_port (u_int8_t, u_int16_t, u_int16_t, const char *, int); 69 void print_ugid (u_int8_t, unsigned, unsigned, const char *, unsigned); 70 void print_flags (u_int8_t); 71 void print_fromto(struct pf_rule_addr *, pf_osfp_t, 72 struct pf_rule_addr *, sa_family_t, u_int8_t, int, int); 73 int ifa_skip_if(const char *filter, struct node_host *p); 74 75 struct node_host *host_if(const char *, int, int *); 76 struct node_host *host_v4(const char *, int); 77 struct node_host *host_v6(const char *, int); 78 struct node_host *host_dns(const char *, int, int); 79 80 const char * const tcpflags = "FSRPAUEW"; 81 82 static const struct icmptypeent icmp_type[] = { 83 { "echoreq", ICMP_ECHO }, 84 { "echorep", ICMP_ECHOREPLY }, 85 { "unreach", ICMP_UNREACH }, 86 { "squench", ICMP_SOURCEQUENCH }, 87 { "redir", ICMP_REDIRECT }, 88 { "althost", ICMP_ALTHOSTADDR }, 89 { "routeradv", ICMP_ROUTERADVERT }, 90 { "routersol", ICMP_ROUTERSOLICIT }, 91 { "timex", ICMP_TIMXCEED }, 92 { "paramprob", ICMP_PARAMPROB }, 93 { "timereq", ICMP_TSTAMP }, 94 { "timerep", ICMP_TSTAMPREPLY }, 95 { "inforeq", ICMP_IREQ }, 96 { "inforep", ICMP_IREQREPLY }, 97 { "maskreq", ICMP_MASKREQ }, 98 { "maskrep", ICMP_MASKREPLY }, 99 { "trace", ICMP_TRACEROUTE }, 100 { "dataconv", ICMP_DATACONVERR }, 101 { "mobredir", ICMP_MOBILE_REDIRECT }, 102 { "ipv6-where", ICMP_IPV6_WHEREAREYOU }, 103 { "ipv6-here", ICMP_IPV6_IAMHERE }, 104 { "mobregreq", ICMP_MOBILE_REGREQUEST }, 105 { "mobregrep", ICMP_MOBILE_REGREPLY }, 106 { "skip", ICMP_SKIP }, 107 { "photuris", ICMP_PHOTURIS } 108 }; 109 110 static const struct icmptypeent icmp6_type[] = { 111 { "unreach", ICMP6_DST_UNREACH }, 112 { "toobig", ICMP6_PACKET_TOO_BIG }, 113 { "timex", ICMP6_TIME_EXCEEDED }, 114 { "paramprob", ICMP6_PARAM_PROB }, 115 { "echoreq", ICMP6_ECHO_REQUEST }, 116 { "echorep", ICMP6_ECHO_REPLY }, 117 { "groupqry", ICMP6_MEMBERSHIP_QUERY }, 118 { "listqry", MLD_LISTENER_QUERY }, 119 { "grouprep", ICMP6_MEMBERSHIP_REPORT }, 120 { "listenrep", MLD_LISTENER_REPORT }, 121 { "groupterm", ICMP6_MEMBERSHIP_REDUCTION }, 122 { "listendone", MLD_LISTENER_DONE }, 123 { "routersol", ND_ROUTER_SOLICIT }, 124 { "routeradv", ND_ROUTER_ADVERT }, 125 { "neighbrsol", ND_NEIGHBOR_SOLICIT }, 126 { "neighbradv", ND_NEIGHBOR_ADVERT }, 127 { "redir", ND_REDIRECT }, 128 { "routrrenum", ICMP6_ROUTER_RENUMBERING }, 129 { "wrureq", ICMP6_WRUREQUEST }, 130 { "wrurep", ICMP6_WRUREPLY }, 131 { "fqdnreq", ICMP6_FQDN_QUERY }, 132 { "fqdnrep", ICMP6_FQDN_REPLY }, 133 { "niqry", ICMP6_NI_QUERY }, 134 { "nirep", ICMP6_NI_REPLY }, 135 { "mtraceresp", MLD_MTRACE_RESP }, 136 { "mtrace", MLD_MTRACE } 137 }; 138 139 static const struct icmpcodeent icmp_code[] = { 140 { "net-unr", ICMP_UNREACH, ICMP_UNREACH_NET }, 141 { "host-unr", ICMP_UNREACH, ICMP_UNREACH_HOST }, 142 { "proto-unr", ICMP_UNREACH, ICMP_UNREACH_PROTOCOL }, 143 { "port-unr", ICMP_UNREACH, ICMP_UNREACH_PORT }, 144 { "needfrag", ICMP_UNREACH, ICMP_UNREACH_NEEDFRAG }, 145 { "srcfail", ICMP_UNREACH, ICMP_UNREACH_SRCFAIL }, 146 { "net-unk", ICMP_UNREACH, ICMP_UNREACH_NET_UNKNOWN }, 147 { "host-unk", ICMP_UNREACH, ICMP_UNREACH_HOST_UNKNOWN }, 148 { "isolate", ICMP_UNREACH, ICMP_UNREACH_ISOLATED }, 149 { "net-prohib", ICMP_UNREACH, ICMP_UNREACH_NET_PROHIB }, 150 { "host-prohib", ICMP_UNREACH, ICMP_UNREACH_HOST_PROHIB }, 151 { "net-tos", ICMP_UNREACH, ICMP_UNREACH_TOSNET }, 152 { "host-tos", ICMP_UNREACH, ICMP_UNREACH_TOSHOST }, 153 { "filter-prohib", ICMP_UNREACH, ICMP_UNREACH_FILTER_PROHIB }, 154 { "host-preced", ICMP_UNREACH, ICMP_UNREACH_HOST_PRECEDENCE }, 155 { "cutoff-preced", ICMP_UNREACH, ICMP_UNREACH_PRECEDENCE_CUTOFF }, 156 { "redir-net", ICMP_REDIRECT, ICMP_REDIRECT_NET }, 157 { "redir-host", ICMP_REDIRECT, ICMP_REDIRECT_HOST }, 158 { "redir-tos-net", ICMP_REDIRECT, ICMP_REDIRECT_TOSNET }, 159 { "redir-tos-host", ICMP_REDIRECT, ICMP_REDIRECT_TOSHOST }, 160 { "normal-adv", ICMP_ROUTERADVERT, ICMP_ROUTERADVERT_NORMAL }, 161 { "common-adv", ICMP_ROUTERADVERT, ICMP_ROUTERADVERT_NOROUTE_COMMON }, 162 { "transit", ICMP_TIMXCEED, ICMP_TIMXCEED_INTRANS }, 163 { "reassemb", ICMP_TIMXCEED, ICMP_TIMXCEED_REASS }, 164 { "badhead", ICMP_PARAMPROB, ICMP_PARAMPROB_ERRATPTR }, 165 { "optmiss", ICMP_PARAMPROB, ICMP_PARAMPROB_OPTABSENT }, 166 { "badlen", ICMP_PARAMPROB, ICMP_PARAMPROB_LENGTH }, 167 { "unknown-ind", ICMP_PHOTURIS, ICMP_PHOTURIS_UNKNOWN_INDEX }, 168 { "auth-fail", ICMP_PHOTURIS, ICMP_PHOTURIS_AUTH_FAILED }, 169 { "decrypt-fail", ICMP_PHOTURIS, ICMP_PHOTURIS_DECRYPT_FAILED } 170 }; 171 172 static const struct icmpcodeent icmp6_code[] = { 173 { "admin-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_ADMIN }, 174 { "noroute-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOROUTE }, 175 { "notnbr-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOTNEIGHBOR }, 176 { "beyond-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_BEYONDSCOPE }, 177 { "addr-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_ADDR }, 178 { "port-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOPORT }, 179 { "transit", ICMP6_TIME_EXCEEDED, ICMP6_TIME_EXCEED_TRANSIT }, 180 { "reassemb", ICMP6_TIME_EXCEEDED, ICMP6_TIME_EXCEED_REASSEMBLY }, 181 { "badhead", ICMP6_PARAM_PROB, ICMP6_PARAMPROB_HEADER }, 182 { "nxthdr", ICMP6_PARAM_PROB, ICMP6_PARAMPROB_NEXTHEADER }, 183 { "redironlink", ND_REDIRECT, ND_REDIRECT_ONLINK }, 184 { "redirrouter", ND_REDIRECT, ND_REDIRECT_ROUTER } 185 }; 186 187 const struct pf_timeout pf_timeouts[] = { 188 { "tcp.first", PFTM_TCP_FIRST_PACKET }, 189 { "tcp.opening", PFTM_TCP_OPENING }, 190 { "tcp.established", PFTM_TCP_ESTABLISHED }, 191 { "tcp.closing", PFTM_TCP_CLOSING }, 192 { "tcp.finwait", PFTM_TCP_FIN_WAIT }, 193 { "tcp.closed", PFTM_TCP_CLOSED }, 194 { "tcp.tsdiff", PFTM_TS_DIFF }, 195 { "sctp.first", PFTM_SCTP_FIRST_PACKET }, 196 { "sctp.opening", PFTM_SCTP_OPENING }, 197 { "sctp.established", PFTM_SCTP_ESTABLISHED }, 198 { "sctp.closing", PFTM_SCTP_CLOSING }, 199 { "sctp.closed", PFTM_SCTP_CLOSED }, 200 { "udp.first", PFTM_UDP_FIRST_PACKET }, 201 { "udp.single", PFTM_UDP_SINGLE }, 202 { "udp.multiple", PFTM_UDP_MULTIPLE }, 203 { "icmp.first", PFTM_ICMP_FIRST_PACKET }, 204 { "icmp.error", PFTM_ICMP_ERROR_REPLY }, 205 { "other.first", PFTM_OTHER_FIRST_PACKET }, 206 { "other.single", PFTM_OTHER_SINGLE }, 207 { "other.multiple", PFTM_OTHER_MULTIPLE }, 208 { "frag", PFTM_FRAG }, 209 { "interval", PFTM_INTERVAL }, 210 { "adaptive.start", PFTM_ADAPTIVE_START }, 211 { "adaptive.end", PFTM_ADAPTIVE_END }, 212 { "src.track", PFTM_SRC_NODE }, 213 { NULL, 0 } 214 }; 215 216 static struct hsearch_data isgroup_map; 217 218 static __attribute__((constructor)) void 219 pfctl_parser_init(void) 220 { 221 /* 222 * As hdestroy() will never be called on these tables, it will be 223 * safe to use references into the stored data as keys. 224 */ 225 if (hcreate_r(0, &isgroup_map) == 0) 226 err(1, "Failed to create interface group query response map"); 227 } 228 229 const struct icmptypeent * 230 geticmptypebynumber(u_int8_t type, sa_family_t af) 231 { 232 unsigned int i; 233 234 if (af != AF_INET6) { 235 for (i=0; i < nitems(icmp_type); i++) { 236 if (type == icmp_type[i].type) 237 return (&icmp_type[i]); 238 } 239 } else { 240 for (i=0; i < nitems(icmp6_type); i++) { 241 if (type == icmp6_type[i].type) 242 return (&icmp6_type[i]); 243 } 244 } 245 return (NULL); 246 } 247 248 const struct icmptypeent * 249 geticmptypebyname(char *w, sa_family_t af) 250 { 251 unsigned int i; 252 253 if (af != AF_INET6) { 254 for (i=0; i < nitems(icmp_type); i++) { 255 if (!strcmp(w, icmp_type[i].name)) 256 return (&icmp_type[i]); 257 } 258 } else { 259 for (i=0; i < nitems(icmp6_type); i++) { 260 if (!strcmp(w, icmp6_type[i].name)) 261 return (&icmp6_type[i]); 262 } 263 } 264 return (NULL); 265 } 266 267 const struct icmpcodeent * 268 geticmpcodebynumber(u_int8_t type, u_int8_t code, sa_family_t af) 269 { 270 unsigned int i; 271 272 if (af != AF_INET6) { 273 for (i=0; i < nitems(icmp_code); i++) { 274 if (type == icmp_code[i].type && 275 code == icmp_code[i].code) 276 return (&icmp_code[i]); 277 } 278 } else { 279 for (i=0; i < nitems(icmp6_code); i++) { 280 if (type == icmp6_code[i].type && 281 code == icmp6_code[i].code) 282 return (&icmp6_code[i]); 283 } 284 } 285 return (NULL); 286 } 287 288 const struct icmpcodeent * 289 geticmpcodebyname(u_long type, char *w, sa_family_t af) 290 { 291 unsigned int i; 292 293 if (af != AF_INET6) { 294 for (i=0; i < nitems(icmp_code); i++) { 295 if (type == icmp_code[i].type && 296 !strcmp(w, icmp_code[i].name)) 297 return (&icmp_code[i]); 298 } 299 } else { 300 for (i=0; i < nitems(icmp6_code); i++) { 301 if (type == icmp6_code[i].type && 302 !strcmp(w, icmp6_code[i].name)) 303 return (&icmp6_code[i]); 304 } 305 } 306 return (NULL); 307 } 308 309 void 310 print_op(u_int8_t op, const char *a1, const char *a2) 311 { 312 if (op == PF_OP_IRG) 313 printf(" %s >< %s", a1, a2); 314 else if (op == PF_OP_XRG) 315 printf(" %s <> %s", a1, a2); 316 else if (op == PF_OP_EQ) 317 printf(" = %s", a1); 318 else if (op == PF_OP_NE) 319 printf(" != %s", a1); 320 else if (op == PF_OP_LT) 321 printf(" < %s", a1); 322 else if (op == PF_OP_LE) 323 printf(" <= %s", a1); 324 else if (op == PF_OP_GT) 325 printf(" > %s", a1); 326 else if (op == PF_OP_GE) 327 printf(" >= %s", a1); 328 else if (op == PF_OP_RRG) 329 printf(" %s:%s", a1, a2); 330 } 331 332 void 333 print_port(u_int8_t op, u_int16_t p1, u_int16_t p2, const char *proto, int numeric) 334 { 335 char a1[6], a2[6]; 336 struct servent *s; 337 338 if (!numeric) 339 s = getservbyport(p1, proto); 340 else 341 s = NULL; 342 p1 = ntohs(p1); 343 p2 = ntohs(p2); 344 snprintf(a1, sizeof(a1), "%u", p1); 345 snprintf(a2, sizeof(a2), "%u", p2); 346 printf(" port"); 347 if (s != NULL && (op == PF_OP_EQ || op == PF_OP_NE)) 348 print_op(op, s->s_name, a2); 349 else 350 print_op(op, a1, a2); 351 } 352 353 void 354 print_ugid(u_int8_t op, unsigned u1, unsigned u2, const char *t, unsigned umax) 355 { 356 char a1[11], a2[11]; 357 358 snprintf(a1, sizeof(a1), "%u", u1); 359 snprintf(a2, sizeof(a2), "%u", u2); 360 printf(" %s", t); 361 if (u1 == umax && (op == PF_OP_EQ || op == PF_OP_NE)) 362 print_op(op, "unknown", a2); 363 else 364 print_op(op, a1, a2); 365 } 366 367 void 368 print_flags(u_int8_t f) 369 { 370 int i; 371 372 for (i = 0; tcpflags[i]; ++i) 373 if (f & (1 << i)) 374 printf("%c", tcpflags[i]); 375 } 376 377 void 378 print_fromto(struct pf_rule_addr *src, pf_osfp_t osfp, struct pf_rule_addr *dst, 379 sa_family_t af, u_int8_t proto, int verbose, int numeric) 380 { 381 char buf[PF_OSFP_LEN*3]; 382 if (src->addr.type == PF_ADDR_ADDRMASK && 383 dst->addr.type == PF_ADDR_ADDRMASK && 384 PF_AZERO(&src->addr.v.a.addr, AF_INET6) && 385 PF_AZERO(&src->addr.v.a.mask, AF_INET6) && 386 PF_AZERO(&dst->addr.v.a.addr, AF_INET6) && 387 PF_AZERO(&dst->addr.v.a.mask, AF_INET6) && 388 !src->neg && !dst->neg && 389 !src->port_op && !dst->port_op && 390 osfp == PF_OSFP_ANY) 391 printf(" all"); 392 else { 393 printf(" from "); 394 if (src->neg) 395 printf("! "); 396 print_addr(&src->addr, af, verbose); 397 if (src->port_op) 398 print_port(src->port_op, src->port[0], 399 src->port[1], 400 proto == IPPROTO_TCP ? "tcp" : "udp", 401 numeric); 402 if (osfp != PF_OSFP_ANY) 403 printf(" os \"%s\"", pfctl_lookup_fingerprint(osfp, buf, 404 sizeof(buf))); 405 406 printf(" to "); 407 if (dst->neg) 408 printf("! "); 409 print_addr(&dst->addr, af, verbose); 410 if (dst->port_op) 411 print_port(dst->port_op, dst->port[0], 412 dst->port[1], 413 proto == IPPROTO_TCP ? "tcp" : "udp", 414 numeric); 415 } 416 } 417 418 void 419 print_pool(struct pfctl_pool *pool, u_int16_t p1, u_int16_t p2, 420 sa_family_t af, int id) 421 { 422 struct pf_pooladdr *pooladdr; 423 424 if ((TAILQ_FIRST(&pool->list) != NULL) && 425 TAILQ_NEXT(TAILQ_FIRST(&pool->list), entries) != NULL) 426 printf("{ "); 427 TAILQ_FOREACH(pooladdr, &pool->list, entries){ 428 switch (id) { 429 case PF_NAT: 430 case PF_RDR: 431 case PF_BINAT: 432 print_addr(&pooladdr->addr, af, 0); 433 break; 434 case PF_PASS: 435 case PF_MATCH: 436 if (PF_AZERO(&pooladdr->addr.v.a.addr, af)) 437 printf("%s", pooladdr->ifname); 438 else { 439 printf("(%s ", pooladdr->ifname); 440 print_addr(&pooladdr->addr, af, 0); 441 printf(")"); 442 } 443 break; 444 default: 445 break; 446 } 447 if (TAILQ_NEXT(pooladdr, entries) != NULL) 448 printf(", "); 449 else if (TAILQ_NEXT(TAILQ_FIRST(&pool->list), entries) != NULL) 450 printf(" }"); 451 } 452 switch (id) { 453 case PF_NAT: 454 if ((p1 != PF_NAT_PROXY_PORT_LOW || 455 p2 != PF_NAT_PROXY_PORT_HIGH) && (p1 != 0 || p2 != 0)) { 456 if (p1 == p2) 457 printf(" port %u", p1); 458 else 459 printf(" port %u:%u", p1, p2); 460 } 461 break; 462 case PF_RDR: 463 if (p1) { 464 printf(" port %u", p1); 465 if (p2 && (p2 != p1)) 466 printf(":%u", p2); 467 } 468 break; 469 default: 470 break; 471 } 472 switch (pool->opts & PF_POOL_TYPEMASK) { 473 case PF_POOL_NONE: 474 break; 475 case PF_POOL_BITMASK: 476 printf(" bitmask"); 477 break; 478 case PF_POOL_RANDOM: 479 printf(" random"); 480 break; 481 case PF_POOL_SRCHASH: 482 printf(" source-hash 0x%08x%08x%08x%08x", 483 pool->key.key32[0], pool->key.key32[1], 484 pool->key.key32[2], pool->key.key32[3]); 485 break; 486 case PF_POOL_ROUNDROBIN: 487 printf(" round-robin"); 488 break; 489 } 490 if (pool->opts & PF_POOL_STICKYADDR) 491 printf(" sticky-address"); 492 if (pool->opts & PF_POOL_ENDPI) 493 printf(" endpoint-independent"); 494 if (id == PF_NAT && p1 == 0 && p2 == 0) 495 printf(" static-port"); 496 if (pool->mape.offset > 0) 497 printf(" map-e-portset %u/%u/%u", 498 pool->mape.offset, pool->mape.psidlen, pool->mape.psid); 499 } 500 501 const char * const pf_reasons[PFRES_MAX+1] = PFRES_NAMES; 502 const char * const pf_lcounters[LCNT_MAX+1] = LCNT_NAMES; 503 const char * const pf_fcounters[FCNT_MAX+1] = FCNT_NAMES; 504 const char * const pf_scounters[FCNT_MAX+1] = FCNT_NAMES; 505 506 void 507 print_status(struct pfctl_status *s, struct pfctl_syncookies *cookies, int opts) 508 { 509 struct pfctl_status_counter *c; 510 char statline[80], *running; 511 time_t runtime; 512 int i; 513 char buf[PF_MD5_DIGEST_LENGTH * 2 + 1]; 514 static const char hex[] = "0123456789abcdef"; 515 516 runtime = time(NULL) - s->since; 517 running = s->running ? "Enabled" : "Disabled"; 518 519 if (s->since) { 520 unsigned int sec, min, hrs, day = runtime; 521 522 sec = day % 60; 523 day /= 60; 524 min = day % 60; 525 day /= 60; 526 hrs = day % 24; 527 day /= 24; 528 snprintf(statline, sizeof(statline), 529 "Status: %s for %u days %.2u:%.2u:%.2u", 530 running, day, hrs, min, sec); 531 } else 532 snprintf(statline, sizeof(statline), "Status: %s", running); 533 printf("%-44s", statline); 534 switch (s->debug) { 535 case PF_DEBUG_NONE: 536 printf("%15s\n\n", "Debug: None"); 537 break; 538 case PF_DEBUG_URGENT: 539 printf("%15s\n\n", "Debug: Urgent"); 540 break; 541 case PF_DEBUG_MISC: 542 printf("%15s\n\n", "Debug: Misc"); 543 break; 544 case PF_DEBUG_NOISY: 545 printf("%15s\n\n", "Debug: Loud"); 546 break; 547 } 548 549 if (opts & PF_OPT_VERBOSE) { 550 printf("Hostid: 0x%08x\n", s->hostid); 551 552 for (i = 0; i < PF_MD5_DIGEST_LENGTH; i++) { 553 buf[i + i] = hex[s->pf_chksum[i] >> 4]; 554 buf[i + i + 1] = hex[s->pf_chksum[i] & 0x0f]; 555 } 556 buf[i + i] = '\0'; 557 printf("Checksum: 0x%s\n\n", buf); 558 } 559 560 if (s->ifname[0] != 0) { 561 printf("Interface Stats for %-16s %5s %16s\n", 562 s->ifname, "IPv4", "IPv6"); 563 printf(" %-25s %14llu %16llu\n", "Bytes In", 564 (unsigned long long)s->bcounters[0][0], 565 (unsigned long long)s->bcounters[1][0]); 566 printf(" %-25s %14llu %16llu\n", "Bytes Out", 567 (unsigned long long)s->bcounters[0][1], 568 (unsigned long long)s->bcounters[1][1]); 569 printf(" Packets In\n"); 570 printf(" %-23s %14llu %16llu\n", "Passed", 571 (unsigned long long)s->pcounters[0][0][PF_PASS], 572 (unsigned long long)s->pcounters[1][0][PF_PASS]); 573 printf(" %-23s %14llu %16llu\n", "Blocked", 574 (unsigned long long)s->pcounters[0][0][PF_DROP], 575 (unsigned long long)s->pcounters[1][0][PF_DROP]); 576 printf(" Packets Out\n"); 577 printf(" %-23s %14llu %16llu\n", "Passed", 578 (unsigned long long)s->pcounters[0][1][PF_PASS], 579 (unsigned long long)s->pcounters[1][1][PF_PASS]); 580 printf(" %-23s %14llu %16llu\n\n", "Blocked", 581 (unsigned long long)s->pcounters[0][1][PF_DROP], 582 (unsigned long long)s->pcounters[1][1][PF_DROP]); 583 } 584 printf("%-27s %14s %16s\n", "State Table", "Total", "Rate"); 585 printf(" %-25s %14ju %14s\n", "current entries", s->states, ""); 586 TAILQ_FOREACH(c, &s->fcounters, entry) { 587 printf(" %-25s %14ju ", c->name, c->counter); 588 if (runtime > 0) 589 printf("%14.1f/s\n", 590 (double)c->counter / (double)runtime); 591 else 592 printf("%14s\n", ""); 593 } 594 if (opts & PF_OPT_VERBOSE) { 595 printf("Source Tracking Table\n"); 596 printf(" %-25s %14ju %14s\n", "current entries", 597 s->src_nodes, ""); 598 TAILQ_FOREACH(c, &s->scounters, entry) { 599 printf(" %-25s %14ju ", c->name, c->counter); 600 if (runtime > 0) 601 printf("%14.1f/s\n", 602 (double)c->counter / (double)runtime); 603 else 604 printf("%14s\n", ""); 605 } 606 } 607 printf("Counters\n"); 608 TAILQ_FOREACH(c, &s->counters, entry) { 609 printf(" %-25s %14ju ", c->name, c->counter); 610 if (runtime > 0) 611 printf("%14.1f/s\n", 612 (double)c->counter / (double)runtime); 613 else 614 printf("%14s\n", ""); 615 } 616 if (opts & PF_OPT_VERBOSE) { 617 printf("Limit Counters\n"); 618 TAILQ_FOREACH(c, &s->lcounters, entry) { 619 printf(" %-25s %14ju ", c->name, c->counter); 620 if (runtime > 0) 621 printf("%14.1f/s\n", 622 (double)c->counter / (double)runtime); 623 else 624 printf("%14s\n", ""); 625 } 626 627 printf("Syncookies\n"); 628 assert(cookies->mode <= PFCTL_SYNCOOKIES_ADAPTIVE); 629 printf(" %-25s %s\n", "mode", 630 PFCTL_SYNCOOKIES_MODE_NAMES[cookies->mode]); 631 printf(" %-25s %s\n", "active", 632 s->syncookies_active ? "active" : "inactive"); 633 if (opts & PF_OPT_VERBOSE2) { 634 printf(" %-25s %d %%\n", "highwater", cookies->highwater); 635 printf(" %-25s %d %%\n", "lowwater", cookies->lowwater); 636 printf(" %-25s %d\n", "halfopen states", cookies->halfopen_states); 637 } 638 printf("Reassemble %24s %s\n", 639 s->reass & PF_REASS_ENABLED ? "yes" : "no", 640 s->reass & PF_REASS_NODF ? "no-df" : "" 641 ); 642 } 643 } 644 645 void 646 print_running(struct pfctl_status *status) 647 { 648 printf("%s\n", status->running ? "Enabled" : "Disabled"); 649 } 650 651 void 652 print_src_node(struct pfctl_src_node *sn, int opts) 653 { 654 struct pf_addr_wrap aw; 655 uint64_t min, sec; 656 657 memset(&aw, 0, sizeof(aw)); 658 if (sn->af == AF_INET) 659 aw.v.a.mask.addr32[0] = 0xffffffff; 660 else 661 memset(&aw.v.a.mask, 0xff, sizeof(aw.v.a.mask)); 662 663 aw.v.a.addr = sn->addr; 664 print_addr(&aw, sn->af, opts & PF_OPT_VERBOSE2); 665 printf(" -> "); 666 aw.v.a.addr = sn->raddr; 667 print_addr(&aw, sn->af, opts & PF_OPT_VERBOSE2); 668 printf(" ( states %u, connections %u, rate %u.%u/%us )\n", sn->states, 669 sn->conn, sn->conn_rate.count / 1000, 670 (sn->conn_rate.count % 1000) / 100, sn->conn_rate.seconds); 671 if (opts & PF_OPT_VERBOSE) { 672 sec = sn->creation % 60; 673 sn->creation /= 60; 674 min = sn->creation % 60; 675 sn->creation /= 60; 676 printf(" age %.2" PRIu64 ":%.2" PRIu64 ":%.2" PRIu64, 677 sn->creation, min, sec); 678 if (sn->states == 0) { 679 sec = sn->expire % 60; 680 sn->expire /= 60; 681 min = sn->expire % 60; 682 sn->expire /= 60; 683 printf(", expires in %.2" PRIu64 ":%.2" PRIu64 ":%.2" PRIu64, 684 sn->expire, min, sec); 685 } 686 printf(", %" PRIu64 " pkts, %" PRIu64 " bytes", 687 sn->packets[0] + sn->packets[1], 688 sn->bytes[0] + sn->bytes[1]); 689 switch (sn->ruletype) { 690 case PF_NAT: 691 if (sn->rule != -1) 692 printf(", nat rule %u", sn->rule); 693 break; 694 case PF_RDR: 695 if (sn->rule != -1) 696 printf(", rdr rule %u", sn->rule); 697 break; 698 case PF_PASS: 699 case PF_MATCH: 700 if (sn->rule != -1) 701 printf(", filter rule %u", sn->rule); 702 break; 703 } 704 printf("\n"); 705 } 706 } 707 708 static void 709 print_eth_addr(const struct pfctl_eth_addr *a) 710 { 711 int i, masklen = ETHER_ADDR_LEN * 8; 712 bool seen_unset = false; 713 714 for (i = 0; i < ETHER_ADDR_LEN; i++) { 715 if (a->addr[i] != 0) 716 break; 717 } 718 719 /* Unset, so don't print anything. */ 720 if (i == ETHER_ADDR_LEN) 721 return; 722 723 printf("%s%02x:%02x:%02x:%02x:%02x:%02x", a->neg ? "! " : "", 724 a->addr[0], a->addr[1], a->addr[2], a->addr[3], a->addr[4], 725 a->addr[5]); 726 727 for (i = 0; i < (ETHER_ADDR_LEN * 8); i++) { 728 bool isset = a->mask[i / 8] & (1 << i % 8); 729 730 if (! seen_unset) { 731 if (isset) 732 continue; 733 seen_unset = true; 734 masklen = i; 735 } else { 736 /* Not actually a continuous mask, so print the whole 737 * thing. */ 738 if (isset) 739 break; 740 continue; 741 } 742 } 743 744 if (masklen == (ETHER_ADDR_LEN * 8)) 745 return; 746 747 if (i == (ETHER_ADDR_LEN * 8)) { 748 printf("/%d", masklen); 749 return; 750 } 751 752 printf("&%02x:%02x:%02x:%02x:%02x:%02x", 753 a->mask[0], a->mask[1], a->mask[2], a->mask[3], a->mask[4], 754 a->mask[5]); 755 } 756 757 void 758 print_eth_rule(struct pfctl_eth_rule *r, const char *anchor_call, 759 int rule_numbers) 760 { 761 static const char *actiontypes[] = { "pass", "block", "", "", "", "", 762 "", "", "", "", "", "", "match" }; 763 764 int i; 765 766 if (rule_numbers) 767 printf("@%u ", r->nr); 768 769 printf("ether "); 770 if (anchor_call[0]) { 771 if (anchor_call[0] == '_') { 772 printf("anchor"); 773 } else 774 printf("anchor \"%s\"", anchor_call); 775 } else { 776 printf("%s", actiontypes[r->action]); 777 } 778 if (r->direction == PF_IN) 779 printf(" in"); 780 else if (r->direction == PF_OUT) 781 printf(" out"); 782 783 if (r->quick) 784 printf(" quick"); 785 if (r->ifname[0]) { 786 if (r->ifnot) 787 printf(" on ! %s", r->ifname); 788 else 789 printf(" on %s", r->ifname); 790 } 791 if (r->bridge_to[0]) 792 printf(" bridge-to %s", r->bridge_to); 793 if (r->proto) 794 printf(" proto 0x%04x", r->proto); 795 796 if (r->src.isset) { 797 printf(" from "); 798 print_eth_addr(&r->src); 799 } 800 if (r->dst.isset) { 801 printf(" to "); 802 print_eth_addr(&r->dst); 803 } 804 printf(" l3"); 805 print_fromto(&r->ipsrc, PF_OSFP_ANY, &r->ipdst, 806 r->proto == ETHERTYPE_IP ? AF_INET : AF_INET6, 0, 807 0, 0); 808 809 i = 0; 810 while (r->label[i][0]) 811 printf(" label \"%s\"", r->label[i++]); 812 if (r->ridentifier) 813 printf(" ridentifier %u", r->ridentifier); 814 815 if (r->qname[0]) 816 printf(" queue %s", r->qname); 817 if (r->tagname[0]) 818 printf(" tag %s", r->tagname); 819 if (r->match_tagname[0]) { 820 if (r->match_tag_not) 821 printf(" !"); 822 printf(" tagged %s", r->match_tagname); 823 } 824 if (r->dnpipe) 825 printf(" %s %d", 826 r->dnflags & PFRULE_DN_IS_PIPE ? "dnpipe" : "dnqueue", 827 r->dnpipe); 828 } 829 830 void 831 print_rule(struct pfctl_rule *r, const char *anchor_call, int verbose, int numeric) 832 { 833 static const char *actiontypes[] = { "pass", "block", "scrub", 834 "no scrub", "nat", "no nat", "binat", "no binat", "rdr", "no rdr", 835 "", "", "match"}; 836 static const char *anchortypes[] = { "anchor", "anchor", "anchor", 837 "anchor", "nat-anchor", "nat-anchor", "binat-anchor", 838 "binat-anchor", "rdr-anchor", "rdr-anchor" }; 839 int i, opts; 840 char *p; 841 842 if (verbose) 843 printf("@%d ", r->nr); 844 if (r->action == PF_MATCH) 845 printf("match"); 846 else if (r->action > PF_NORDR) 847 printf("action(%d)", r->action); 848 else if (anchor_call[0]) { 849 p = strrchr(anchor_call, '/'); 850 if (p ? p[1] == '_' : anchor_call[0] == '_') 851 printf("%s", anchortypes[r->action]); 852 else 853 printf("%s \"%s\"", anchortypes[r->action], 854 anchor_call); 855 } else { 856 printf("%s", actiontypes[r->action]); 857 if (r->natpass) 858 printf(" pass"); 859 } 860 if (r->action == PF_DROP) { 861 if (r->rule_flag & PFRULE_RETURN) 862 printf(" return"); 863 else if (r->rule_flag & PFRULE_RETURNRST) { 864 if (!r->return_ttl) 865 printf(" return-rst"); 866 else 867 printf(" return-rst(ttl %d)", r->return_ttl); 868 } else if (r->rule_flag & PFRULE_RETURNICMP) { 869 const struct icmpcodeent *ic, *ic6; 870 871 ic = geticmpcodebynumber(r->return_icmp >> 8, 872 r->return_icmp & 255, AF_INET); 873 ic6 = geticmpcodebynumber(r->return_icmp6 >> 8, 874 r->return_icmp6 & 255, AF_INET6); 875 876 switch (r->af) { 877 case AF_INET: 878 printf(" return-icmp"); 879 if (ic == NULL) 880 printf("(%u)", r->return_icmp & 255); 881 else 882 printf("(%s)", ic->name); 883 break; 884 case AF_INET6: 885 printf(" return-icmp6"); 886 if (ic6 == NULL) 887 printf("(%u)", r->return_icmp6 & 255); 888 else 889 printf("(%s)", ic6->name); 890 break; 891 default: 892 printf(" return-icmp"); 893 if (ic == NULL) 894 printf("(%u, ", r->return_icmp & 255); 895 else 896 printf("(%s, ", ic->name); 897 if (ic6 == NULL) 898 printf("%u)", r->return_icmp6 & 255); 899 else 900 printf("%s)", ic6->name); 901 break; 902 } 903 } else 904 printf(" drop"); 905 } 906 if (r->direction == PF_IN) 907 printf(" in"); 908 else if (r->direction == PF_OUT) 909 printf(" out"); 910 if (r->log) { 911 printf(" log"); 912 if (r->log & ~PF_LOG || r->logif) { 913 int count = 0; 914 915 printf(" ("); 916 if (r->log & PF_LOG_ALL) 917 printf("%sall", count++ ? ", " : ""); 918 if (r->log & PF_LOG_MATCHES) 919 printf("%smatches", count++ ? ", " : ""); 920 if (r->log & PF_LOG_SOCKET_LOOKUP) 921 printf("%suser", count++ ? ", " : ""); 922 if (r->logif) 923 printf("%sto pflog%u", count++ ? ", " : "", 924 r->logif); 925 printf(")"); 926 } 927 } 928 if (r->quick) 929 printf(" quick"); 930 if (r->ifname[0]) { 931 if (r->ifnot) 932 printf(" on ! %s", r->ifname); 933 else 934 printf(" on %s", r->ifname); 935 } 936 if (r->rt) { 937 if (r->rt == PF_ROUTETO) 938 printf(" route-to"); 939 else if (r->rt == PF_REPLYTO) 940 printf(" reply-to"); 941 else if (r->rt == PF_DUPTO) 942 printf(" dup-to"); 943 printf(" "); 944 print_pool(&r->rpool, 0, 0, r->af, PF_PASS); 945 } 946 if (r->af) { 947 if (r->af == AF_INET) 948 printf(" inet"); 949 else 950 printf(" inet6"); 951 } 952 if (r->proto) { 953 const char *protoname; 954 955 if ((protoname = pfctl_proto2name(r->proto)) != NULL) 956 printf(" proto %s", protoname); 957 else 958 printf(" proto %u", r->proto); 959 } 960 print_fromto(&r->src, r->os_fingerprint, &r->dst, r->af, r->proto, 961 verbose, numeric); 962 if (r->rcv_ifname[0]) 963 printf(" received-on %s", r->rcv_ifname); 964 if (r->uid.op) 965 print_ugid(r->uid.op, r->uid.uid[0], r->uid.uid[1], "user", 966 UID_MAX); 967 if (r->gid.op) 968 print_ugid(r->gid.op, r->gid.gid[0], r->gid.gid[1], "group", 969 GID_MAX); 970 if (r->flags || r->flagset) { 971 printf(" flags "); 972 print_flags(r->flags); 973 printf("/"); 974 print_flags(r->flagset); 975 } else if ((r->action == PF_PASS || r->action == PF_MATCH) && 976 (!r->proto || r->proto == IPPROTO_TCP) && 977 !(r->rule_flag & PFRULE_FRAGMENT) && 978 !anchor_call[0] && r->keep_state) 979 printf(" flags any"); 980 if (r->type) { 981 const struct icmptypeent *it; 982 983 it = geticmptypebynumber(r->type-1, r->af); 984 if (r->af != AF_INET6) 985 printf(" icmp-type"); 986 else 987 printf(" icmp6-type"); 988 if (it != NULL) 989 printf(" %s", it->name); 990 else 991 printf(" %u", r->type-1); 992 if (r->code) { 993 const struct icmpcodeent *ic; 994 995 ic = geticmpcodebynumber(r->type-1, r->code-1, r->af); 996 if (ic != NULL) 997 printf(" code %s", ic->name); 998 else 999 printf(" code %u", r->code-1); 1000 } 1001 } 1002 if (r->tos) 1003 printf(" tos 0x%2.2x", r->tos); 1004 if (r->prio) 1005 printf(" prio %u", r->prio == PF_PRIO_ZERO ? 0 : r->prio); 1006 if (r->scrub_flags & PFSTATE_SETMASK) { 1007 char *comma = ""; 1008 printf(" set ("); 1009 if (r->scrub_flags & PFSTATE_SETPRIO) { 1010 if (r->set_prio[0] == r->set_prio[1]) 1011 printf("%s prio %u", comma, r->set_prio[0]); 1012 else 1013 printf("%s prio(%u, %u)", comma, r->set_prio[0], 1014 r->set_prio[1]); 1015 comma = ","; 1016 } 1017 if (r->scrub_flags & PFSTATE_SETTOS) { 1018 printf("%s tos 0x%2.2x", comma, r->set_tos); 1019 comma = ","; 1020 } 1021 printf(" )"); 1022 } 1023 if (!r->keep_state && r->action == PF_PASS && !anchor_call[0]) 1024 printf(" no state"); 1025 else if (r->keep_state == PF_STATE_NORMAL) 1026 printf(" keep state"); 1027 else if (r->keep_state == PF_STATE_MODULATE) 1028 printf(" modulate state"); 1029 else if (r->keep_state == PF_STATE_SYNPROXY) 1030 printf(" synproxy state"); 1031 if (r->prob) { 1032 char buf[20]; 1033 1034 snprintf(buf, sizeof(buf), "%f", r->prob*100.0/(UINT_MAX+1.0)); 1035 for (i = strlen(buf)-1; i > 0; i--) { 1036 if (buf[i] == '0') 1037 buf[i] = '\0'; 1038 else { 1039 if (buf[i] == '.') 1040 buf[i] = '\0'; 1041 break; 1042 } 1043 } 1044 printf(" probability %s%%", buf); 1045 } 1046 opts = 0; 1047 if (r->max_states || r->max_src_nodes || r->max_src_states) 1048 opts = 1; 1049 if (r->rule_flag & PFRULE_NOSYNC) 1050 opts = 1; 1051 if (r->rule_flag & PFRULE_SRCTRACK) 1052 opts = 1; 1053 if (r->rule_flag & PFRULE_IFBOUND) 1054 opts = 1; 1055 if (r->rule_flag & PFRULE_STATESLOPPY) 1056 opts = 1; 1057 if (r->rule_flag & PFRULE_PFLOW) 1058 opts = 1; 1059 for (i = 0; !opts && i < PFTM_MAX; ++i) 1060 if (r->timeout[i]) 1061 opts = 1; 1062 if (opts) { 1063 printf(" ("); 1064 if (r->max_states) { 1065 printf("max %u", r->max_states); 1066 opts = 0; 1067 } 1068 if (r->rule_flag & PFRULE_NOSYNC) { 1069 if (!opts) 1070 printf(", "); 1071 printf("no-sync"); 1072 opts = 0; 1073 } 1074 if (r->rule_flag & PFRULE_SRCTRACK) { 1075 if (!opts) 1076 printf(", "); 1077 printf("source-track"); 1078 if (r->rule_flag & PFRULE_RULESRCTRACK) 1079 printf(" rule"); 1080 else 1081 printf(" global"); 1082 opts = 0; 1083 } 1084 if (r->max_src_states) { 1085 if (!opts) 1086 printf(", "); 1087 printf("max-src-states %u", r->max_src_states); 1088 opts = 0; 1089 } 1090 if (r->max_src_conn) { 1091 if (!opts) 1092 printf(", "); 1093 printf("max-src-conn %u", r->max_src_conn); 1094 opts = 0; 1095 } 1096 if (r->max_src_conn_rate.limit) { 1097 if (!opts) 1098 printf(", "); 1099 printf("max-src-conn-rate %u/%u", 1100 r->max_src_conn_rate.limit, 1101 r->max_src_conn_rate.seconds); 1102 opts = 0; 1103 } 1104 if (r->max_src_nodes) { 1105 if (!opts) 1106 printf(", "); 1107 printf("max-src-nodes %u", r->max_src_nodes); 1108 opts = 0; 1109 } 1110 if (r->overload_tblname[0]) { 1111 if (!opts) 1112 printf(", "); 1113 printf("overload <%s>", r->overload_tblname); 1114 if (r->flush) 1115 printf(" flush"); 1116 if (r->flush & PF_FLUSH_GLOBAL) 1117 printf(" global"); 1118 } 1119 if (r->rule_flag & PFRULE_IFBOUND) { 1120 if (!opts) 1121 printf(", "); 1122 printf("if-bound"); 1123 opts = 0; 1124 } 1125 if (r->rule_flag & PFRULE_STATESLOPPY) { 1126 if (!opts) 1127 printf(", "); 1128 printf("sloppy"); 1129 opts = 0; 1130 } 1131 if (r->rule_flag & PFRULE_PFLOW) { 1132 if (!opts) 1133 printf(", "); 1134 printf("pflow"); 1135 opts = 0; 1136 } 1137 for (i = 0; i < PFTM_MAX; ++i) 1138 if (r->timeout[i]) { 1139 int j; 1140 1141 if (!opts) 1142 printf(", "); 1143 opts = 0; 1144 for (j = 0; pf_timeouts[j].name != NULL; 1145 ++j) 1146 if (pf_timeouts[j].timeout == i) 1147 break; 1148 printf("%s %u", pf_timeouts[j].name == NULL ? 1149 "inv.timeout" : pf_timeouts[j].name, 1150 r->timeout[i]); 1151 } 1152 printf(")"); 1153 } 1154 if (r->allow_opts) 1155 printf(" allow-opts"); 1156 if (r->rule_flag & PFRULE_FRAGMENT) 1157 printf(" fragment"); 1158 if (r->action == PF_SCRUB) { 1159 /* Scrub flags for old-style scrub. */ 1160 if (r->rule_flag & PFRULE_NODF) 1161 printf(" no-df"); 1162 if (r->rule_flag & PFRULE_RANDOMID) 1163 printf(" random-id"); 1164 if (r->min_ttl) 1165 printf(" min-ttl %d", r->min_ttl); 1166 if (r->max_mss) 1167 printf(" max-mss %d", r->max_mss); 1168 if (r->rule_flag & PFRULE_SET_TOS) 1169 printf(" set-tos 0x%2.2x", r->set_tos); 1170 if (r->rule_flag & PFRULE_REASSEMBLE_TCP) 1171 printf(" reassemble tcp"); 1172 /* The PFRULE_FRAGMENT_NOREASS is set on all rules by default! */ 1173 printf(" fragment %sreassemble", 1174 r->rule_flag & PFRULE_FRAGMENT_NOREASS ? "no " : ""); 1175 } else if (r->scrub_flags & PFSTATE_SCRUBMASK || r->min_ttl || r->max_mss) { 1176 /* Scrub actions on normal rules. */ 1177 printf(" scrub("); 1178 if (r->scrub_flags & PFSTATE_NODF) 1179 printf(" no-df"); 1180 if (r->scrub_flags & PFSTATE_RANDOMID) 1181 printf(" random-id"); 1182 if (r->min_ttl) 1183 printf(" min-ttl %d", r->min_ttl); 1184 if (r->scrub_flags & PFSTATE_SETTOS) 1185 printf(" set-tos 0x%2.2x", r->set_tos); 1186 if (r->scrub_flags & PFSTATE_SCRUB_TCP) 1187 printf(" reassemble tcp"); 1188 if (r->max_mss) 1189 printf(" max-mss %d", r->max_mss); 1190 printf(")"); 1191 } 1192 i = 0; 1193 while (r->label[i][0]) 1194 printf(" label \"%s\"", r->label[i++]); 1195 if (r->ridentifier) 1196 printf(" ridentifier %u", r->ridentifier); 1197 /* Only dnrpipe as we might do (0, 42) to only queue return traffic. */ 1198 if (r->dnrpipe) 1199 printf(" %s(%d, %d)", 1200 r->free_flags & PFRULE_DN_IS_PIPE ? "dnpipe" : "dnqueue", 1201 r->dnpipe, r->dnrpipe); 1202 else if (r->dnpipe) 1203 printf(" %s %d", 1204 r->free_flags & PFRULE_DN_IS_PIPE ? "dnpipe" : "dnqueue", 1205 r->dnpipe); 1206 if (r->qname[0] && r->pqname[0]) 1207 printf(" queue(%s, %s)", r->qname, r->pqname); 1208 else if (r->qname[0]) 1209 printf(" queue %s", r->qname); 1210 if (r->tagname[0]) 1211 printf(" tag %s", r->tagname); 1212 if (r->match_tagname[0]) { 1213 if (r->match_tag_not) 1214 printf(" !"); 1215 printf(" tagged %s", r->match_tagname); 1216 } 1217 if (r->rtableid != -1) 1218 printf(" rtable %u", r->rtableid); 1219 if (r->divert.port) { 1220 #ifdef __FreeBSD__ 1221 printf(" divert-to %u", ntohs(r->divert.port)); 1222 #else 1223 if (PF_AZERO(&r->divert.addr, r->af)) { 1224 printf(" divert-reply"); 1225 } else { 1226 /* XXX cut&paste from print_addr */ 1227 char buf[48]; 1228 1229 printf(" divert-to "); 1230 if (inet_ntop(r->af, &r->divert.addr, buf, 1231 sizeof(buf)) == NULL) 1232 printf("?"); 1233 else 1234 printf("%s", buf); 1235 printf(" port %u", ntohs(r->divert.port)); 1236 } 1237 #endif 1238 } 1239 if (!anchor_call[0] && (r->action == PF_NAT || 1240 r->action == PF_BINAT || r->action == PF_RDR)) { 1241 printf(" -> "); 1242 print_pool(&r->rpool, r->rpool.proxy_port[0], 1243 r->rpool.proxy_port[1], r->af, r->action); 1244 } 1245 } 1246 1247 void 1248 print_tabledef(const char *name, int flags, int addrs, 1249 struct node_tinithead *nodes) 1250 { 1251 struct node_tinit *ti, *nti; 1252 struct node_host *h; 1253 1254 printf("table <%s>", name); 1255 if (flags & PFR_TFLAG_CONST) 1256 printf(" const"); 1257 if (flags & PFR_TFLAG_PERSIST) 1258 printf(" persist"); 1259 if (flags & PFR_TFLAG_COUNTERS) 1260 printf(" counters"); 1261 SIMPLEQ_FOREACH(ti, nodes, entries) { 1262 if (ti->file) { 1263 printf(" file \"%s\"", ti->file); 1264 continue; 1265 } 1266 printf(" {"); 1267 for (;;) { 1268 for (h = ti->host; h != NULL; h = h->next) { 1269 printf(h->not ? " !" : " "); 1270 print_addr(&h->addr, h->af, 0); 1271 } 1272 nti = SIMPLEQ_NEXT(ti, entries); 1273 if (nti != NULL && nti->file == NULL) 1274 ti = nti; /* merge lists */ 1275 else 1276 break; 1277 } 1278 printf(" }"); 1279 } 1280 if (addrs && SIMPLEQ_EMPTY(nodes)) 1281 printf(" { }"); 1282 printf("\n"); 1283 } 1284 1285 int 1286 parse_flags(char *s) 1287 { 1288 char *p, *q; 1289 u_int8_t f = 0; 1290 1291 for (p = s; *p; p++) { 1292 if ((q = strchr(tcpflags, *p)) == NULL) 1293 return -1; 1294 else 1295 f |= 1 << (q - tcpflags); 1296 } 1297 return (f ? f : PF_TH_ALL); 1298 } 1299 1300 void 1301 set_ipmask(struct node_host *h, u_int8_t b) 1302 { 1303 struct pf_addr *m, *n; 1304 int i, j = 0; 1305 1306 m = &h->addr.v.a.mask; 1307 memset(m, 0, sizeof(*m)); 1308 1309 while (b >= 32) { 1310 m->addr32[j++] = 0xffffffff; 1311 b -= 32; 1312 } 1313 for (i = 31; i > 31-b; --i) 1314 m->addr32[j] |= (1 << i); 1315 if (b) 1316 m->addr32[j] = htonl(m->addr32[j]); 1317 1318 /* Mask off bits of the address that will never be used. */ 1319 n = &h->addr.v.a.addr; 1320 if (h->addr.type == PF_ADDR_ADDRMASK) 1321 for (i = 0; i < 4; i++) 1322 n->addr32[i] = n->addr32[i] & m->addr32[i]; 1323 } 1324 1325 int 1326 check_netmask(struct node_host *h, sa_family_t af) 1327 { 1328 struct node_host *n = NULL; 1329 struct pf_addr *m; 1330 1331 for (n = h; n != NULL; n = n->next) { 1332 if (h->addr.type == PF_ADDR_TABLE) 1333 continue; 1334 m = &h->addr.v.a.mask; 1335 /* netmasks > 32 bit are invalid on v4 */ 1336 if (af == AF_INET && 1337 (m->addr32[1] || m->addr32[2] || m->addr32[3])) { 1338 fprintf(stderr, "netmask %u invalid for IPv4 address\n", 1339 unmask(m, AF_INET6)); 1340 return (1); 1341 } 1342 } 1343 return (0); 1344 } 1345 1346 struct node_host * 1347 gen_dynnode(struct node_host *h, sa_family_t af) 1348 { 1349 struct node_host *n; 1350 struct pf_addr *m; 1351 1352 if (h->addr.type != PF_ADDR_DYNIFTL) 1353 return (NULL); 1354 1355 if ((n = calloc(1, sizeof(*n))) == NULL) 1356 return (NULL); 1357 bcopy(h, n, sizeof(*n)); 1358 n->ifname = NULL; 1359 n->next = NULL; 1360 n->tail = NULL; 1361 1362 /* fix up netmask */ 1363 m = &n->addr.v.a.mask; 1364 if (af == AF_INET && unmask(m, AF_INET6) > 32) 1365 set_ipmask(n, 32); 1366 1367 return (n); 1368 } 1369 1370 /* interface lookup routines */ 1371 1372 static struct node_host *iftab; 1373 1374 /* 1375 * Retrieve the list of groups this interface is a member of and make sure 1376 * each group is in the group map. 1377 */ 1378 static void 1379 ifa_add_groups_to_map(char *ifa_name) 1380 { 1381 int s, len; 1382 struct ifgroupreq ifgr; 1383 struct ifg_req *ifg; 1384 1385 s = get_query_socket(); 1386 1387 /* Get size of group list for this interface */ 1388 memset(&ifgr, 0, sizeof(ifgr)); 1389 strlcpy(ifgr.ifgr_name, ifa_name, IFNAMSIZ); 1390 if (ioctl(s, SIOCGIFGROUP, (caddr_t)&ifgr) == -1) 1391 err(1, "SIOCGIFGROUP"); 1392 1393 /* Retrieve group list for this interface */ 1394 len = ifgr.ifgr_len; 1395 ifgr.ifgr_groups = 1396 (struct ifg_req *)calloc(len / sizeof(struct ifg_req), 1397 sizeof(struct ifg_req)); 1398 if (ifgr.ifgr_groups == NULL) 1399 err(1, "calloc"); 1400 if (ioctl(s, SIOCGIFGROUP, (caddr_t)&ifgr) == -1) 1401 err(1, "SIOCGIFGROUP"); 1402 1403 ifg = ifgr.ifgr_groups; 1404 for (; ifg && len >= sizeof(struct ifg_req); ifg++) { 1405 len -= sizeof(struct ifg_req); 1406 if (strcmp(ifg->ifgrq_group, "all")) { 1407 ENTRY item; 1408 ENTRY *ret_item; 1409 int *answer; 1410 1411 item.key = ifg->ifgrq_group; 1412 if (hsearch_r(item, FIND, &ret_item, &isgroup_map) == 0) { 1413 struct ifgroupreq ifgr2; 1414 1415 /* Don't know the answer yet */ 1416 if ((answer = malloc(sizeof(int))) == NULL) 1417 err(1, "malloc"); 1418 1419 bzero(&ifgr2, sizeof(ifgr2)); 1420 strlcpy(ifgr2.ifgr_name, ifg->ifgrq_group, 1421 sizeof(ifgr2.ifgr_name)); 1422 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr2) == 0) 1423 *answer = ifgr2.ifgr_len; 1424 else 1425 *answer = 0; 1426 1427 item.key = strdup(ifg->ifgrq_group); 1428 item.data = answer; 1429 if (hsearch_r(item, ENTER, &ret_item, 1430 &isgroup_map) == 0) 1431 err(1, "interface group query response" 1432 " map insert"); 1433 } 1434 } 1435 } 1436 free(ifgr.ifgr_groups); 1437 } 1438 1439 void 1440 ifa_load(void) 1441 { 1442 struct ifaddrs *ifap, *ifa; 1443 struct node_host *n = NULL, *h = NULL; 1444 1445 if (getifaddrs(&ifap) < 0) 1446 err(1, "getifaddrs"); 1447 1448 for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 1449 if (!(ifa->ifa_addr->sa_family == AF_INET || 1450 ifa->ifa_addr->sa_family == AF_INET6 || 1451 ifa->ifa_addr->sa_family == AF_LINK)) 1452 continue; 1453 n = calloc(1, sizeof(struct node_host)); 1454 if (n == NULL) 1455 err(1, "address: calloc"); 1456 n->af = ifa->ifa_addr->sa_family; 1457 n->ifa_flags = ifa->ifa_flags; 1458 #ifdef __KAME__ 1459 if (n->af == AF_INET6 && 1460 IN6_IS_ADDR_LINKLOCAL(&((struct sockaddr_in6 *) 1461 ifa->ifa_addr)->sin6_addr) && 1462 ((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_scope_id == 1463 0) { 1464 struct sockaddr_in6 *sin6; 1465 1466 sin6 = (struct sockaddr_in6 *)ifa->ifa_addr; 1467 sin6->sin6_scope_id = sin6->sin6_addr.s6_addr[2] << 8 | 1468 sin6->sin6_addr.s6_addr[3]; 1469 sin6->sin6_addr.s6_addr[2] = 0; 1470 sin6->sin6_addr.s6_addr[3] = 0; 1471 } 1472 #endif 1473 n->ifindex = 0; 1474 if (n->af == AF_INET) { 1475 memcpy(&n->addr.v.a.addr, &((struct sockaddr_in *) 1476 ifa->ifa_addr)->sin_addr.s_addr, 1477 sizeof(struct in_addr)); 1478 memcpy(&n->addr.v.a.mask, &((struct sockaddr_in *) 1479 ifa->ifa_netmask)->sin_addr.s_addr, 1480 sizeof(struct in_addr)); 1481 if (ifa->ifa_broadaddr != NULL) 1482 memcpy(&n->bcast, &((struct sockaddr_in *) 1483 ifa->ifa_broadaddr)->sin_addr.s_addr, 1484 sizeof(struct in_addr)); 1485 if (ifa->ifa_dstaddr != NULL) 1486 memcpy(&n->peer, &((struct sockaddr_in *) 1487 ifa->ifa_dstaddr)->sin_addr.s_addr, 1488 sizeof(struct in_addr)); 1489 } else if (n->af == AF_INET6) { 1490 memcpy(&n->addr.v.a.addr, &((struct sockaddr_in6 *) 1491 ifa->ifa_addr)->sin6_addr.s6_addr, 1492 sizeof(struct in6_addr)); 1493 memcpy(&n->addr.v.a.mask, &((struct sockaddr_in6 *) 1494 ifa->ifa_netmask)->sin6_addr.s6_addr, 1495 sizeof(struct in6_addr)); 1496 if (ifa->ifa_broadaddr != NULL) 1497 memcpy(&n->bcast, &((struct sockaddr_in6 *) 1498 ifa->ifa_broadaddr)->sin6_addr.s6_addr, 1499 sizeof(struct in6_addr)); 1500 if (ifa->ifa_dstaddr != NULL) 1501 memcpy(&n->peer, &((struct sockaddr_in6 *) 1502 ifa->ifa_dstaddr)->sin6_addr.s6_addr, 1503 sizeof(struct in6_addr)); 1504 n->ifindex = ((struct sockaddr_in6 *) 1505 ifa->ifa_addr)->sin6_scope_id; 1506 } else if (n->af == AF_LINK) { 1507 ifa_add_groups_to_map(ifa->ifa_name); 1508 } 1509 if ((n->ifname = strdup(ifa->ifa_name)) == NULL) 1510 err(1, "ifa_load: strdup"); 1511 n->next = NULL; 1512 n->tail = n; 1513 if (h == NULL) 1514 h = n; 1515 else { 1516 h->tail->next = n; 1517 h->tail = n; 1518 } 1519 } 1520 1521 iftab = h; 1522 freeifaddrs(ifap); 1523 } 1524 1525 static int 1526 get_socket_domain(void) 1527 { 1528 int sdom; 1529 1530 sdom = AF_UNSPEC; 1531 #ifdef WITH_INET6 1532 if (sdom == AF_UNSPEC && feature_present("inet6")) 1533 sdom = AF_INET6; 1534 #endif 1535 #ifdef WITH_INET 1536 if (sdom == AF_UNSPEC && feature_present("inet")) 1537 sdom = AF_INET; 1538 #endif 1539 if (sdom == AF_UNSPEC) 1540 sdom = AF_LINK; 1541 1542 return (sdom); 1543 } 1544 1545 int 1546 get_query_socket(void) 1547 { 1548 static int s = -1; 1549 1550 if (s == -1) { 1551 if ((s = socket(get_socket_domain(), SOCK_DGRAM, 0)) == -1) 1552 err(1, "socket"); 1553 } 1554 1555 return (s); 1556 } 1557 1558 /* 1559 * Returns the response len if the name is a group, otherwise returns 0. 1560 */ 1561 static int 1562 is_a_group(char *name) 1563 { 1564 ENTRY item; 1565 ENTRY *ret_item; 1566 1567 item.key = name; 1568 if (hsearch_r(item, FIND, &ret_item, &isgroup_map) == 0) 1569 return (0); 1570 1571 return (*(int *)ret_item->data); 1572 } 1573 1574 struct node_host * 1575 ifa_exists(char *ifa_name) 1576 { 1577 struct node_host *n; 1578 1579 if (iftab == NULL) 1580 ifa_load(); 1581 1582 /* check whether this is a group */ 1583 if (is_a_group(ifa_name)) { 1584 /* fake a node_host */ 1585 if ((n = calloc(1, sizeof(*n))) == NULL) 1586 err(1, "calloc"); 1587 if ((n->ifname = strdup(ifa_name)) == NULL) 1588 err(1, "strdup"); 1589 return (n); 1590 } 1591 1592 for (n = iftab; n; n = n->next) { 1593 if (n->af == AF_LINK && !strncmp(n->ifname, ifa_name, IFNAMSIZ)) 1594 return (n); 1595 } 1596 1597 return (NULL); 1598 } 1599 1600 struct node_host * 1601 ifa_grouplookup(char *ifa_name, int flags) 1602 { 1603 struct ifg_req *ifg; 1604 struct ifgroupreq ifgr; 1605 int s, len; 1606 struct node_host *n, *h = NULL; 1607 1608 s = get_query_socket(); 1609 len = is_a_group(ifa_name); 1610 if (len == 0) 1611 return (NULL); 1612 bzero(&ifgr, sizeof(ifgr)); 1613 strlcpy(ifgr.ifgr_name, ifa_name, sizeof(ifgr.ifgr_name)); 1614 ifgr.ifgr_len = len; 1615 if ((ifgr.ifgr_groups = calloc(1, len)) == NULL) 1616 err(1, "calloc"); 1617 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == -1) 1618 err(1, "SIOCGIFGMEMB"); 1619 1620 for (ifg = ifgr.ifgr_groups; ifg && len >= sizeof(struct ifg_req); 1621 ifg++) { 1622 len -= sizeof(struct ifg_req); 1623 if ((n = ifa_lookup(ifg->ifgrq_member, flags)) == NULL) 1624 continue; 1625 if (h == NULL) 1626 h = n; 1627 else { 1628 h->tail->next = n; 1629 h->tail = n->tail; 1630 } 1631 } 1632 free(ifgr.ifgr_groups); 1633 1634 return (h); 1635 } 1636 1637 struct node_host * 1638 ifa_lookup(char *ifa_name, int flags) 1639 { 1640 struct node_host *p = NULL, *h = NULL, *n = NULL; 1641 int got4 = 0, got6 = 0; 1642 const char *last_if = NULL; 1643 1644 /* first load iftab and isgroup_map */ 1645 if (iftab == NULL) 1646 ifa_load(); 1647 1648 if ((h = ifa_grouplookup(ifa_name, flags)) != NULL) 1649 return (h); 1650 1651 if (!strncmp(ifa_name, "self", IFNAMSIZ)) 1652 ifa_name = NULL; 1653 1654 for (p = iftab; p; p = p->next) { 1655 if (ifa_skip_if(ifa_name, p)) 1656 continue; 1657 if ((flags & PFI_AFLAG_BROADCAST) && p->af != AF_INET) 1658 continue; 1659 if ((flags & PFI_AFLAG_BROADCAST) && 1660 !(p->ifa_flags & IFF_BROADCAST)) 1661 continue; 1662 if ((flags & PFI_AFLAG_PEER) && 1663 !(p->ifa_flags & IFF_POINTOPOINT)) 1664 continue; 1665 if ((flags & PFI_AFLAG_NETWORK) && p->ifindex > 0) 1666 continue; 1667 if (last_if == NULL || strcmp(last_if, p->ifname)) 1668 got4 = got6 = 0; 1669 last_if = p->ifname; 1670 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET && got4) 1671 continue; 1672 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET6 && 1673 IN6_IS_ADDR_LINKLOCAL(&p->addr.v.a.addr.v6)) 1674 continue; 1675 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET6 && got6) 1676 continue; 1677 if (p->af == AF_INET) 1678 got4 = 1; 1679 else 1680 got6 = 1; 1681 n = calloc(1, sizeof(struct node_host)); 1682 if (n == NULL) 1683 err(1, "address: calloc"); 1684 n->af = p->af; 1685 if (flags & PFI_AFLAG_BROADCAST) 1686 memcpy(&n->addr.v.a.addr, &p->bcast, 1687 sizeof(struct pf_addr)); 1688 else if (flags & PFI_AFLAG_PEER) 1689 memcpy(&n->addr.v.a.addr, &p->peer, 1690 sizeof(struct pf_addr)); 1691 else 1692 memcpy(&n->addr.v.a.addr, &p->addr.v.a.addr, 1693 sizeof(struct pf_addr)); 1694 if (flags & PFI_AFLAG_NETWORK) 1695 set_ipmask(n, unmask(&p->addr.v.a.mask, n->af)); 1696 else { 1697 if (n->af == AF_INET) { 1698 if (p->ifa_flags & IFF_LOOPBACK && 1699 p->ifa_flags & IFF_LINK1) 1700 memcpy(&n->addr.v.a.mask, 1701 &p->addr.v.a.mask, 1702 sizeof(struct pf_addr)); 1703 else 1704 set_ipmask(n, 32); 1705 } else 1706 set_ipmask(n, 128); 1707 } 1708 n->ifindex = p->ifindex; 1709 n->ifname = strdup(p->ifname); 1710 1711 n->next = NULL; 1712 n->tail = n; 1713 if (h == NULL) 1714 h = n; 1715 else { 1716 h->tail->next = n; 1717 h->tail = n; 1718 } 1719 } 1720 return (h); 1721 } 1722 1723 int 1724 ifa_skip_if(const char *filter, struct node_host *p) 1725 { 1726 int n; 1727 1728 if (p->af != AF_INET && p->af != AF_INET6) 1729 return (1); 1730 if (filter == NULL || !*filter) 1731 return (0); 1732 if (!strcmp(p->ifname, filter)) 1733 return (0); /* exact match */ 1734 n = strlen(filter); 1735 if (n < 1 || n >= IFNAMSIZ) 1736 return (1); /* sanity check */ 1737 if (filter[n-1] >= '0' && filter[n-1] <= '9') 1738 return (1); /* only do exact match in that case */ 1739 if (strncmp(p->ifname, filter, n)) 1740 return (1); /* prefix doesn't match */ 1741 return (p->ifname[n] < '0' || p->ifname[n] > '9'); 1742 } 1743 1744 1745 struct node_host * 1746 host(const char *s) 1747 { 1748 struct node_host *h = NULL; 1749 int mask, v4mask, v6mask, cont = 1; 1750 char *p, *q, *ps; 1751 1752 if ((p = strrchr(s, '/')) != NULL) { 1753 mask = strtol(p+1, &q, 0); 1754 if (!q || *q || mask > 128 || q == (p+1)) { 1755 fprintf(stderr, "invalid netmask '%s'\n", p); 1756 return (NULL); 1757 } 1758 if ((ps = malloc(strlen(s) - strlen(p) + 1)) == NULL) 1759 err(1, "host: malloc"); 1760 strlcpy(ps, s, strlen(s) - strlen(p) + 1); 1761 v4mask = v6mask = mask; 1762 } else { 1763 if ((ps = strdup(s)) == NULL) 1764 err(1, "host: strdup"); 1765 v4mask = 32; 1766 v6mask = 128; 1767 mask = -1; 1768 } 1769 1770 /* IPv4 address? */ 1771 if (cont && (h = host_v4(s, mask)) != NULL) 1772 cont = 0; 1773 1774 /* IPv6 address? */ 1775 if (cont && (h = host_v6(ps, v6mask)) != NULL) 1776 cont = 0; 1777 1778 /* interface with this name exists? */ 1779 /* expensive with thousands of interfaces - prioritze IPv4/6 check */ 1780 if (cont && (h = host_if(ps, mask, &cont)) != NULL) 1781 cont = 0; 1782 1783 /* dns lookup */ 1784 if (cont && (h = host_dns(ps, v4mask, v6mask)) != NULL) 1785 cont = 0; 1786 free(ps); 1787 1788 if (h == NULL || cont == 1) { 1789 fprintf(stderr, "no IP address found for %s\n", s); 1790 return (NULL); 1791 } 1792 return (h); 1793 } 1794 1795 struct node_host * 1796 host_if(const char *s, int mask, int *cont) 1797 { 1798 struct node_host *n, *h = NULL; 1799 char *p, *ps; 1800 int flags = 0; 1801 1802 if ((ps = strdup(s)) == NULL) 1803 err(1, "host_if: strdup"); 1804 while ((p = strrchr(ps, ':')) != NULL) { 1805 if (!strcmp(p+1, "network")) 1806 flags |= PFI_AFLAG_NETWORK; 1807 else if (!strcmp(p+1, "broadcast")) 1808 flags |= PFI_AFLAG_BROADCAST; 1809 else if (!strcmp(p+1, "peer")) 1810 flags |= PFI_AFLAG_PEER; 1811 else if (!strcmp(p+1, "0")) 1812 flags |= PFI_AFLAG_NOALIAS; 1813 else { 1814 free(ps); 1815 return (NULL); 1816 } 1817 *p = '\0'; 1818 *cont = 0; 1819 } 1820 if (flags & (flags - 1) & PFI_AFLAG_MODEMASK) { /* Yep! */ 1821 fprintf(stderr, "illegal combination of interface modifiers\n"); 1822 free(ps); 1823 return (NULL); 1824 } 1825 if ((flags & (PFI_AFLAG_NETWORK|PFI_AFLAG_BROADCAST)) && mask > -1) { 1826 fprintf(stderr, "network or broadcast lookup, but " 1827 "extra netmask given\n"); 1828 free(ps); 1829 return (NULL); 1830 } 1831 if (ifa_exists(ps) || !strncmp(ps, "self", IFNAMSIZ)) { 1832 /* interface with this name exists */ 1833 h = ifa_lookup(ps, flags); 1834 for (n = h; n != NULL && mask > -1; n = n->next) 1835 set_ipmask(n, mask); 1836 } 1837 1838 free(ps); 1839 return (h); 1840 } 1841 1842 struct node_host * 1843 host_v4(const char *s, int mask) 1844 { 1845 struct node_host *h = NULL; 1846 struct in_addr ina; 1847 int bits = 32; 1848 1849 memset(&ina, 0, sizeof(struct in_addr)); 1850 if (strrchr(s, '/') != NULL) { 1851 if ((bits = inet_net_pton(AF_INET, s, &ina, sizeof(ina))) == -1) 1852 return (NULL); 1853 } else { 1854 if (inet_pton(AF_INET, s, &ina) != 1) 1855 return (NULL); 1856 } 1857 1858 h = calloc(1, sizeof(struct node_host)); 1859 if (h == NULL) 1860 err(1, "address: calloc"); 1861 h->ifname = NULL; 1862 h->af = AF_INET; 1863 h->addr.v.a.addr.addr32[0] = ina.s_addr; 1864 set_ipmask(h, bits); 1865 h->next = NULL; 1866 h->tail = h; 1867 1868 return (h); 1869 } 1870 1871 struct node_host * 1872 host_v6(const char *s, int mask) 1873 { 1874 struct addrinfo hints, *res; 1875 struct node_host *h = NULL; 1876 1877 memset(&hints, 0, sizeof(hints)); 1878 hints.ai_family = AF_INET6; 1879 hints.ai_socktype = SOCK_DGRAM; /*dummy*/ 1880 hints.ai_flags = AI_NUMERICHOST; 1881 if (getaddrinfo(s, "0", &hints, &res) == 0) { 1882 h = calloc(1, sizeof(struct node_host)); 1883 if (h == NULL) 1884 err(1, "address: calloc"); 1885 h->ifname = NULL; 1886 h->af = AF_INET6; 1887 memcpy(&h->addr.v.a.addr, 1888 &((struct sockaddr_in6 *)res->ai_addr)->sin6_addr, 1889 sizeof(h->addr.v.a.addr)); 1890 h->ifindex = 1891 ((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id; 1892 set_ipmask(h, mask); 1893 freeaddrinfo(res); 1894 h->next = NULL; 1895 h->tail = h; 1896 } 1897 1898 return (h); 1899 } 1900 1901 struct node_host * 1902 host_dns(const char *s, int v4mask, int v6mask) 1903 { 1904 struct addrinfo hints, *res0, *res; 1905 struct node_host *n, *h = NULL; 1906 int error, noalias = 0; 1907 int got4 = 0, got6 = 0; 1908 char *p, *ps; 1909 1910 if ((ps = strdup(s)) == NULL) 1911 err(1, "host_dns: strdup"); 1912 if ((p = strrchr(ps, ':')) != NULL && !strcmp(p, ":0")) { 1913 noalias = 1; 1914 *p = '\0'; 1915 } 1916 memset(&hints, 0, sizeof(hints)); 1917 hints.ai_family = PF_UNSPEC; 1918 hints.ai_socktype = SOCK_STREAM; /* DUMMY */ 1919 error = getaddrinfo(ps, NULL, &hints, &res0); 1920 if (error) { 1921 free(ps); 1922 return (h); 1923 } 1924 1925 for (res = res0; res; res = res->ai_next) { 1926 if (res->ai_family != AF_INET && 1927 res->ai_family != AF_INET6) 1928 continue; 1929 if (noalias) { 1930 if (res->ai_family == AF_INET) { 1931 if (got4) 1932 continue; 1933 got4 = 1; 1934 } else { 1935 if (got6) 1936 continue; 1937 got6 = 1; 1938 } 1939 } 1940 n = calloc(1, sizeof(struct node_host)); 1941 if (n == NULL) 1942 err(1, "host_dns: calloc"); 1943 n->ifname = NULL; 1944 n->af = res->ai_family; 1945 if (res->ai_family == AF_INET) { 1946 memcpy(&n->addr.v.a.addr, 1947 &((struct sockaddr_in *) 1948 res->ai_addr)->sin_addr.s_addr, 1949 sizeof(struct in_addr)); 1950 set_ipmask(n, v4mask); 1951 } else { 1952 memcpy(&n->addr.v.a.addr, 1953 &((struct sockaddr_in6 *) 1954 res->ai_addr)->sin6_addr.s6_addr, 1955 sizeof(struct in6_addr)); 1956 n->ifindex = 1957 ((struct sockaddr_in6 *) 1958 res->ai_addr)->sin6_scope_id; 1959 set_ipmask(n, v6mask); 1960 } 1961 n->next = NULL; 1962 n->tail = n; 1963 if (h == NULL) 1964 h = n; 1965 else { 1966 h->tail->next = n; 1967 h->tail = n; 1968 } 1969 } 1970 freeaddrinfo(res0); 1971 free(ps); 1972 1973 return (h); 1974 } 1975 1976 /* 1977 * convert a hostname to a list of addresses and put them in the given buffer. 1978 * test: 1979 * if set to 1, only simple addresses are accepted (no netblock, no "!"). 1980 */ 1981 int 1982 append_addr(struct pfr_buffer *b, char *s, int test) 1983 { 1984 char *r; 1985 struct node_host *h, *n; 1986 int rv, not = 0; 1987 1988 for (r = s; *r == '!'; r++) 1989 not = !not; 1990 if ((n = host(r)) == NULL) { 1991 errno = 0; 1992 return (-1); 1993 } 1994 rv = append_addr_host(b, n, test, not); 1995 do { 1996 h = n; 1997 n = n->next; 1998 free(h); 1999 } while (n != NULL); 2000 return (rv); 2001 } 2002 2003 /* 2004 * same as previous function, but with a pre-parsed input and the ability 2005 * to "negate" the result. Does not free the node_host list. 2006 * not: 2007 * setting it to 1 is equivalent to adding "!" in front of parameter s. 2008 */ 2009 int 2010 append_addr_host(struct pfr_buffer *b, struct node_host *n, int test, int not) 2011 { 2012 int bits; 2013 struct pfr_addr addr; 2014 2015 do { 2016 bzero(&addr, sizeof(addr)); 2017 addr.pfra_not = n->not ^ not; 2018 addr.pfra_af = n->af; 2019 addr.pfra_net = unmask(&n->addr.v.a.mask, n->af); 2020 switch (n->af) { 2021 case AF_INET: 2022 addr.pfra_ip4addr.s_addr = n->addr.v.a.addr.addr32[0]; 2023 bits = 32; 2024 break; 2025 case AF_INET6: 2026 memcpy(&addr.pfra_ip6addr, &n->addr.v.a.addr.v6, 2027 sizeof(struct in6_addr)); 2028 bits = 128; 2029 break; 2030 default: 2031 errno = EINVAL; 2032 return (-1); 2033 } 2034 if ((test && (not || addr.pfra_net != bits)) || 2035 addr.pfra_net > bits) { 2036 errno = EINVAL; 2037 return (-1); 2038 } 2039 if (pfr_buf_add(b, &addr)) 2040 return (-1); 2041 } while ((n = n->next) != NULL); 2042 2043 return (0); 2044 } 2045 2046 int 2047 pfctl_add_trans(struct pfr_buffer *buf, int rs_num, const char *anchor) 2048 { 2049 struct pfioc_trans_e trans; 2050 2051 bzero(&trans, sizeof(trans)); 2052 trans.rs_num = rs_num; 2053 if (strlcpy(trans.anchor, anchor, 2054 sizeof(trans.anchor)) >= sizeof(trans.anchor)) 2055 errx(1, "pfctl_add_trans: strlcpy"); 2056 2057 return pfr_buf_add(buf, &trans); 2058 } 2059 2060 u_int32_t 2061 pfctl_get_ticket(struct pfr_buffer *buf, int rs_num, const char *anchor) 2062 { 2063 struct pfioc_trans_e *p; 2064 2065 PFRB_FOREACH(p, buf) 2066 if (rs_num == p->rs_num && !strcmp(anchor, p->anchor)) 2067 return (p->ticket); 2068 errx(1, "pfctl_get_ticket: assertion failed"); 2069 } 2070 2071 int 2072 pfctl_trans(int dev, struct pfr_buffer *buf, u_long cmd, int from) 2073 { 2074 struct pfioc_trans trans; 2075 2076 bzero(&trans, sizeof(trans)); 2077 trans.size = buf->pfrb_size - from; 2078 trans.esize = sizeof(struct pfioc_trans_e); 2079 trans.array = ((struct pfioc_trans_e *)buf->pfrb_caddr) + from; 2080 return ioctl(dev, cmd, &trans); 2081 } 2082